function [x,y,s] = mask_exc(a,idx,orient,vals)

[xr,yr] = fm_draw('R','Exc',orient);

x = cell(7,1);
y = cell(7,1);
s = cell(7,1);

x{1} = [-1.8 4.1 4.1 -1.8 -1.8];
y{1} = [-1.5 -1.5 1.5 1.5 -1.5];
s{1} = 'k';

x{2} = [-1.3 -0.5];
y{2} = [-1 1];
s{2} = 'r';

x{3} = [-0.5 0.3];
y{3} = [1 -1];
s{3} = 'r';

x{4} = [-0.9 -0.1];
y{4} = [0.0 0.0];
s{4} = 'r';

x{5} = 2.8+1.3*xr;
y{5} = 2*yr;
s{5} = 'r';

x{6} = 1.5+[-1.3 -0.5];
y{6} = [1 -1];
s{6} = 'r';

x{7} = 1.5+[-0.5 0.3];
y{7} = [-1 1];
s{7} = 'r';
